Refactoring cloud vm retirement pre_retirement method

content/automate/ManageIQ/Cloud/VM/Retirement/StateMachines/Methods.class/__methods__/pre_retirement.rb

@@ -1,10 +1,37 @@
 #
 # Description: This method stops a cloud Instance
 #
+module ManageIQ
+  module Automate
+    module Cloud
+      module VM
+        module Retirement
+          module StateMachines
+            module Methods
+              class PreRetirement
+                def initialize(handle = $evm)
+                  @handle = handle
+                end
 
-vm = $evm.root['vm']
-if vm && vm.power_state == 'on'
-  ems = vm.ext_management_system
-  $evm.log('info', "Stopping Instance <#{vm.name}> in EMS <#{ems.try(:name)}>")
-  vm.stop if ems
+                def main
+                  vm = @handle.root['vm']
+                  if vm && vm.power_state == 'on'
+                    ems = vm.ext_management_system
+                    if ems
+                      @handle.log('info', "Stopping Instance <#{vm.name}> in EMS <#{ems.name}>")
+                      vm.stop
+                    end
+                  end
+                end
+              end
+            end
+          end
+        end
+      end
+    end
+  end
+end
+
+if $PROGRAM_NAME == __FILE__
+  ManageIQ::Automate::Cloud::VM::Retirement::StateMachines::Methods::PreRetirement.new.main
 end

spec/content/automate/ManageIQ/Cloud/VM/Retirement/StateMachines/Methods.class/__methods__/pre_retirement_spec.rb

@@ -0,0 +1,39 @@
+require_domain_file
+
+describe ManageIQ::Automate::Cloud::VM::Retirement::StateMachines::Methods::PreRetirement do
+  let(:svc_vm)      { MiqAeMethodService::MiqAeServiceVm.find(vm.id) }
+  let(:ems)         { FactoryGirl.create(:ems_microsoft) }
+  let(:root_object) { Spec::Support::MiqAeMockObject.new(root_hash) }
+  let(:root_hash)   { { 'vm' => svc_vm } }
+  let(:vm) do
+    FactoryGirl.create(:vm_microsoft, :ems_id => ems.id)
+  end
+
+  let(:ae_service) do
+    Spec::Support::MiqAeMockService.new(root_object).tap do |service|
+      current_object = Spec::Support::MiqAeMockObject.new
+      current_object.parent = root_object
+      service.object = current_object
+    end
+  end
+
+  it 'powers off a vm in a \'powered_on\' state' do
+    expect(svc_vm).to receive(:stop)
+    described_class.new(ae_service).main
+  end
+
+  it 'does not stop a vm in \'powered_off\' state' do
+    vm.update_attributes(:raw_power_state => "PowerOff")
+    expect(svc_vm).to_not receive(:stop)
+    described_class.new(ae_service).main
+  end
+
+  context 'nil ems' do
+    let(:vm) { FactoryGirl.create(:vm_microsoft) }
+
+    it 'does not stop a vm without ems' do
+      expect(svc_vm).to_not receive(:stop)
+      described_class.new(ae_service).main
+    end
+  end
+end